By use of control theories and system theories, a method has been introduced to analyze this stage.

利用控制论以及系统理论，本文给出崩溃初期的分析方法。

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Use the gray estimate method within gray system theories to youth crime carries on the trend estimate.

用灰色系统理论中的灰色预测方法对青少年犯罪进行趋势预测。

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Then, the relationship and the difference between the fundamental meaning of MLAM and the existing system theories are studied.

同时，在系统层次上指出了基于多活性代理复杂信息系统的基本内涵、与现有系统理论之间的衔接和区别；

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He started doing research, heard theories that the immune system may play a role in autism, and came across the work on whipworm eggs and Crohn's disease.

WSJ: In a Squeaky-Clean World, a Worm Might Help Fight Disease

This antiquated system of rules also results in misleading theories.

FORBES: Colliding Galaxies Provide A Glimpse Into Our Future

The bad news is that the Upsilon Andromedae system is too strange to be explained by current theories of planetary formation.

ECONOMIST: Planet hunting